missing params for ttestval_exp

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/r-util.rb b/lib/r-util.rb
index f10c59b..7174482 100644
--- a/lib/r-util.rb
+++ b/lib/r-util.rb
@@ -170,7 +170,7 @@ module OpenTox
       pvalue_test("var.test",array1,array2,significance_level)
     end
     
-    def ttest_closer_to_zero
+    def ttest_closer_to_zero(array1, array2, paired, significance_level=0.95, params="")
       raise if paired && array1.size!=array2.size
       params = "paired=#{paired ? "T" : "F"}"
       pvalue_test("ttest_closer_to_zero",array1,array2,significance_level,params)